The US Air force is a good enough source for Mr. Morrison?
http://www.fas.org/nuke/guide/israel/nuke/farr.htm
.....but read the disclaimer at the start of this report:
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"""Disclaimer
The views expressed in this publication are those solely of the author and are not a statement of official policy or position of the U.S. Government, the Department of Defense, the U.S. Army, or the USAF Counterproliferation Center.
The Author
Colonel Warner D. "Rocky" Farr, Medical Corps, Master Flight Surgeon, U.S. Army, graduated from the Air War College at Maxwell Air Force Base, Alabama before becoming the Command Surgeon, U.S. Army Special Operations Command at Fort Bragg, North Carolina. He also serves as the Surgeon for the U.S. Army Special Forces Command, U.S. Army Civil Affairs and Psychological Operations Command, and the U.S. Army John F. Kennedy Special Warfare Center and School. With thirty-three years of military service, he holds an Associate of Arts from the State University of New York, Bachelor of Science from Northeast Louisiana University, Doctor of Medicine from the Uniformed Services University of the Health Sciences, Masters of Public Health from the University of Texas, and has completed medical residencies in aerospace medicine, and anatomic and clinical pathology. He is the only army officer to be board certified in these three specialties. Solo qualified in the TH-55A Army helicopter, he received flight training in the T-37 and T-38 aircraft as part of his USAF School of Aerospace Medicine residency.
Colonel Farr was a Master Sergeant Special Forces medic prior to receiving a direct commission to second lieutenant. He is now the senior Special Forces medical officer in the U.S. Army with prior assignments in the 5th, 7th, and 10th Special Forces Groups (Airborne), 1st Special Forces, in Vietnam, the United States, and Germany. He has advised the 12th and 20th Special Forces Groups (Airborne) in the reserves and national guard, served as Division Surgeon, 10th Mountain Division (Light Infantry), and as the Deputy Commander of the U.S. Army Aeromedical Center, Fort Rucker, Alabama.
Acknowledgments
I would like to acknowledge the assistance, guidance and encouragement from my Air War College (AWC) faculty research advisor, Dr. Andrew Terrill, instructor of the Air War College Arab-Israeli Wars course. Thanks are also due to the great aid of the Air University librarians. The author is also indebted to Captain J. R. Saunders, USN and Colonel Robert Sutton, USAF. Who also offered helpful suggestions.
Abstract
This paper is a history of the Israeli nuclear weapons program drawn from a review of unclassified sources. Israel began its search for nuclear weapons at the inception of the state in 1948. As payment for Israeli participation in the Suez Crisis of 1956, France provided nuclear expertise and constructed a reactor complex for Israel at Dimona capable of large-scale plutonium production and reprocessing. The United States discovered the facility by 1958 and it was a subject of continual discussions between American presidents and Israeli prime ministers. Israel used delay and deception to at first keep the United States at bay, and later used the nuclear option as a bargaining chip for a consistent American conventional arms supply. After French disengagement in the early 1960s, Israel progressed on its own, including through several covert operations, to project completion. Before the 1967 Six-Day War, they felt their nuclear facility threatened and reportedly assembled several nuclear devices. By the 1973 Yom Kippur War Israel had a number of sophisticated nuclear bombs, deployed them, and considered using them. The Arabs may have limited their war aims because of their knowledge of the Israeli nuclear weapons. Israel has most probably conducted several nuclear bomb tests. They have continued to modernize and vertically proliferate and are now one of the world's larger nuclear powers. Using "bomb in the basement" nuclear opacity, Israel has been able to use its arsenal as a deterrent to the Arab world while not technically violating American nonproliferation requirements. """""
